A penalty payable under this Part is to be treated for the purposes of Part 6 of the Taxes Management Act 1970 (c. 9) (collection and recovery) as if it were tax charged in an assessment and due and payable.

Regulations under section 203(2)(a) of the Income and Corporation Taxes Act 1988 (c. 1) (PAYE) apply to a penalty payable under this Part as if it were an underpayment of tax for a previous year of assessment.